Brake fluid loss??
Thread Starter
Melting Slicks
Joined: May 2000
Posts: 2,305
Likes: 5
From: Orlando,Fl,USA
Brake fluid loss??
Brake light came on the other day along with a lower pedal on the 77 daily driver. Opened the cannister & lost most of the brake fluid in the rear chamber. Refilled, bled both rears along with master cylinder and all is fine now? Where did the fluid go? I checked lines,connections, rear cylinders, all were dry without any noticable leaks. Any ideas welcome.
Advanced
Joined: Jul 2006
Posts: 61
Likes: 0
From: yadkinville north carolina
majic brake fluid
hey i have the same problem only still no brakes , i was told that the fluid could have gone into the power brake booster , but i dont have power brakes , do you , and if you do that might be the new hoding tank for some of your fluid , just a guess ????
Pro
Joined: Oct 2004
Posts: 663
Likes: 0
From: Honolulu Hawaii
Brake light came on the other day along with a lower pedal on the 77 daily driver. Opened the cannister & lost most of the brake fluid in the rear chamber. Refilled, bled both rears along with master cylinder and all is fine now? Where did the fluid go? I checked lines,connections, rear cylinders, all were dry without any noticable leaks. Any ideas welcome.
Thread Starter
Melting Slicks
Joined: May 2000
Posts: 2,305
Likes: 5
From: Orlando,Fl,USA
If you checked all brake lines and calipers and have found no leaks, and you have power brakes, most chances are your master is leaking from inside the booster and all the fluid is holding in there. It happens all the time to our work vehicles. You may want to check it, brake fluid can damage the booster and your brakes may lock up. It has happened several times to our company vans..
Racer
Joined: Apr 2004
Posts: 372
Likes: 0
From: Keizer OR
Brake light came on the other day along with a lower pedal on the 77 daily driver. Opened the cannister & lost most of the brake fluid in the rear chamber. Refilled, bled both rears along with master cylinder and all is fine now? Where did the fluid go? I checked lines,connections, rear cylinders, all were dry without any noticable leaks. Any ideas welcome.
I don't know if this helps or not, but it seems when my car sits for long periods, a year or more, the brake fluid goes low when I start driving it again. If I drive it regularly I don't have issues. Not sure why.
Pro
Joined: Oct 2004
Posts: 663
Likes: 0
From: Honolulu Hawaii
Hate to say it but you gotta pull the master, you may be able to unbolt it and pull it away from the booster without removing the brake lines. check the rear of the master where the pushrod goes into, you'll be able to tell if it is leaking from there.
Thread Starter
Melting Slicks
Joined: May 2000
Posts: 2,305
Likes: 5
From: Orlando,Fl,USA
Yea that soumds reasonable. I think I may be able to do that without removing the lines also. I guess if move it out even a 1/4 of an inch I should see if its wet or dry back there.
Thread Starter
Melting Slicks
Joined: May 2000
Posts: 2,305
Likes: 5
From: Orlando,Fl,USA
update
I found the leak! I did the pad replacements and found one wet pad with the leak from the seal on rear drivers side caliper. I just ordered a seal fix kit. I hope that does the trick. Calipers are about 7 years old with stainless inserts. All others checked out okay. Funny thing is that it was such a slow leak that I didn't have to replace fluid since that last time and none was evident on visual.
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